“…This value is close to experimental values reported by Shimawaki and Fujii 6 , even if these data are clearly more scattered and have a less evident temperature trend. The results are shown in Table and in Figure , where the published azeotropic compositions, both experimental and calculated, are also included. 1 Vapor−liquid equilibria data for the R32 (1) + R600 (2) system: ·, present data; ○, Shimawaki and Fujii; −, course of the VLE boundary; ◆, mutual solubility data …”
Section: Resultsmentioning
confidence: 99%
“…The results are shown in Table and in Figure , where the published azeotropic compositions, both experimental and calculated, are also included. 1 Vapor−liquid equilibria data for the R32 (1) + R600 (2) system: ·, present data; ○, Shimawaki and Fujii; −, course of the VLE boundary; ◆, mutual solubility data 2 Azeotropic data for the R32 (1) + R600 (2) system: ·, this work at 263.15, 278.15 and 293.15 K; ○, reported as experimental; ◇, calculated by Shimawaki and Fujii 6 at 283.15, 293.15, 303.15, and 313.15 K.…”
Section: Resultsmentioning
confidence: 99%
“…Vapor−liquid equilibria data for the R32 (1) + R600 (2) system: ·, present data; ○, Shimawaki and Fujii; −, course of the VLE boundary; ◆, mutual solubility data …”
Section: Resultsmentioning
confidence: 99%
“…Various equations of state and mixing rules were used to correlate the data to compare their ability to describe this system. In addition, a comparison between our results and the recently published data of Shimawaki and Fujii was made by using the same model.…”
Section: Introductionmentioning
confidence: 82%
“…The Peng−Robinson equation of state with the Wong−Sandler mixing rules was applied by correlating the VLE data for each source and isotherm individually. In Table , the results of the correlation are summarized, also including the reported values in the Shimawaki and Fujii paper . The difference in the resulting parameters from the two independent correlations of the Shimawaki and Fujii 6 data is interesting, even if the employed model is the same.…”
Section: Comparison With Literature Datamentioning
Vapor−liquid equilibria (VLE) for the difluoromethane (R32) + n-butane (R600) system that shows liquid-phase immiscibility below 246 K were measured at (263.15, 278.15, and 293.15) K by means of a static
analytical method. The (T−P−x−y) VLE data were correlated using various equations of state and various
mixing rules to compare the ability of these models to correlate data for this strongly nonideal system.
The correlation of the VLE data and published VLLE data shows that the system is azeotropic at
temperatures higher than the upper critical end point, UCEP, (246 K), heterohomoazeotropic between
(246 and 230) K, and heteroazeotropic below 230 K. A comparison with the available VLE data in the
literature was performed.
“…This value is close to experimental values reported by Shimawaki and Fujii 6 , even if these data are clearly more scattered and have a less evident temperature trend. The results are shown in Table and in Figure , where the published azeotropic compositions, both experimental and calculated, are also included. 1 Vapor−liquid equilibria data for the R32 (1) + R600 (2) system: ·, present data; ○, Shimawaki and Fujii; −, course of the VLE boundary; ◆, mutual solubility data …”
Section: Resultsmentioning
confidence: 99%
“…The results are shown in Table and in Figure , where the published azeotropic compositions, both experimental and calculated, are also included. 1 Vapor−liquid equilibria data for the R32 (1) + R600 (2) system: ·, present data; ○, Shimawaki and Fujii; −, course of the VLE boundary; ◆, mutual solubility data 2 Azeotropic data for the R32 (1) + R600 (2) system: ·, this work at 263.15, 278.15 and 293.15 K; ○, reported as experimental; ◇, calculated by Shimawaki and Fujii 6 at 283.15, 293.15, 303.15, and 313.15 K.…”
Section: Resultsmentioning
confidence: 99%
“…Vapor−liquid equilibria data for the R32 (1) + R600 (2) system: ·, present data; ○, Shimawaki and Fujii; −, course of the VLE boundary; ◆, mutual solubility data …”
Section: Resultsmentioning
confidence: 99%
“…Various equations of state and mixing rules were used to correlate the data to compare their ability to describe this system. In addition, a comparison between our results and the recently published data of Shimawaki and Fujii was made by using the same model.…”
Section: Introductionmentioning
confidence: 82%
“…The Peng−Robinson equation of state with the Wong−Sandler mixing rules was applied by correlating the VLE data for each source and isotherm individually. In Table , the results of the correlation are summarized, also including the reported values in the Shimawaki and Fujii paper . The difference in the resulting parameters from the two independent correlations of the Shimawaki and Fujii 6 data is interesting, even if the employed model is the same.…”
Section: Comparison With Literature Datamentioning
Vapor−liquid equilibria (VLE) for the difluoromethane (R32) + n-butane (R600) system that shows liquid-phase immiscibility below 246 K were measured at (263.15, 278.15, and 293.15) K by means of a static
analytical method. The (T−P−x−y) VLE data were correlated using various equations of state and various
mixing rules to compare the ability of these models to correlate data for this strongly nonideal system.
The correlation of the VLE data and published VLLE data shows that the system is azeotropic at
temperatures higher than the upper critical end point, UCEP, (246 K), heterohomoazeotropic between
(246 and 230) K, and heteroazeotropic below 230 K. A comparison with the available VLE data in the
literature was performed.
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